24 citations · 91 across the 14 of their papers we have counts for
15 papers
TeleTwin: A Calibrated Digital Twin of Telegram Crisis Discourse as a Ground-Truth Testbed for Detecting LLM-Powered Information Operations
Despoina Antonakaki, Sotiris Ioannidis
Large language models make it cheap to run influence operations whose messages never repeat, yet real platforms offer almost no ground truth for testing whether coordination detect…
A Social Media Analysis of Discourse on the Israel--Palestine Conflict on Telegram
Michail Zafeiropoulos, Despoina Antonakaki, Sotiris Ioannidis
Social media has become a central arena in which armed conflicts are contested, yet the pro-Israel and pro-Palestine communities on Telegram, whose broadcast architecture yields an…
From Parliamentary Rhetoric to Enacted Law: An NLP Pipeline for Semantic Auditing of the Greek Legislative Process
Despoina Antonakaki, Sotiris Ioannidis
The Greek legislative framework is characterized by intricate cross-referencing, frequent amendments, and limited machine-readable access, hindering transparency and civic engageme…
Detecting Synthetic Political Narratives in Cross-Platform Social Media Discourse
Despoina Antonakaki, Sotiris Ioannidis
The proliferation of large language models has introduced a new paradigm of synthetic political communication in which narratives may be generated, semantically coordinated, and st…
Cross-Platform Digital Discourse Analysis of Iran: Topics, Sentiment, Polarization, and Event Validation on Telegram and Reddit
Despoina Antonakaki, Sotiris Ioannidis
We analyze Iran-related discourse across two structurally different platforms: Telegram (7,567 messages from international news channels) and Reddit (23,909 posts and comments from…
Coordinated Information Dissemination on Telegram and Reddit During Political Turbulence: A Case Study of Venezuela in Global News Channels
Despoina Antonakaki, Sotiris Ioannidis
Telegram is increasingly used for political communication and news dissemination, yet evidence of coordinated content sharing remains limited. We test whether mainstream global new…
Cross-Platform Digital Discourse Analysis of the Israel-Hamas Conflict: Sentiment, Topics, and Event Dynamics
Despoina Antonakaki, Sotiris Ioannidis
The Israeli-Palestinian conflict remains one of the most polarizing geopolitical issues, with the October 2023 escalation intensifying online debate. Social media platforms, partic…
Israel-Hamas war through Telegram, Reddit and Twitter
Despoina Antonakaki, Sotiris Ioannidis
The Israeli-Palestinian conflict started on 7 October 2023, have resulted thus far to over 48,000 people killed including more than 17,000 children with a majority from Gaza, more…
Russo-Ukrainian War: Prediction and explanation of Twitter suspension
Alexander Shevtsov, Despoina Antonakaki, Ioannis Lamprou +3
On 24 February 2022, Russia invaded Ukraine, starting what is now known as the Russo-Ukrainian War, initiating an online discourse on social media. Twitter as one of the most popul…
BotArtist: Generic approach for bot detection in Twitter via semi-automatic machine learning pipeline
Alexander Shevtsov, Despoina Antonakaki, Ioannis Lamprou +2
Twitter, as one of the most popular social networks, provides a platform for communication and online discourse. Unfortunately, it has also become a target for bots and fake accoun…
Twitter Dataset on the Russo-Ukrainian War
Alexander Shevtsov, Christos Tzagkarakis, Despoina Antonakaki +2
On 24 February 2022, Russia invaded Ukraine, also known now as Russo-Ukrainian War. We have initiated an ongoing dataset acquisition from Twitter API. Until the day this paper was…
Identification of Twitter Bots Based on an Explainable Machine Learning Framework: The US 2020 Elections Case Study
Alexander Shevtsov, Christos Tzagkarakis, Despoina Antonakaki +1
Twitter is one of the most popular social networks attracting millions of users, while a considerable proportion of online discourse is captured. It provides a simple usage framewo…
Analysis of Twitter and YouTube during USelections 2020
Alexander Shevtsov, Maria Oikonomidou, Despoina Antonakaki +2
The presidential elections in the United States on 3 November 2020 have caused extensive discussions on social media. A part of the content on US elections is organic, coming from…
Discovery and classification of Twitter bots
Alexander Shevtsov Alexander Shevtsov, Maria Oikonomidou, Despoina Antonakaki +4
A very large number of people use Online Social Networks daily. Such platforms thus become attractive targets for agents that seek to gain access to the attention of large audience…
Evolving Twitter: an experimental analysis of graph properties of the social graph
Despoina Antonakaki, Sotiris Ioannidis, Paraskevi Fragopoulou
Twitter is one of the most prominent Online Social Networks. It covers a significant part of the online worldwide population~20% and has impressive growth rates. The social graph o…